中性粒细胞内在的TNF受体信号编排了宿主对黄金葡萄球菌的防御
Christine Youn1, Cristina Pontaza1, Yu Wang1
1Department of Dermatology, Johns Hopkins University School of Medicine, 1550 Orleans Street, Baltimore, MD 21287, USA.
Science advances
|June 16, 2023
概括
瘤亡因子 (TNF) 通过免疫细胞对黄金葡萄球菌皮肤感染进行保护. 中性细胞TNF受体 (TNFR) 信号传递至关重要,TNFR2激动剂显示出对细菌皮肤感染的治疗潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 微生物学 微生物学
背景情况:
- 黄金葡萄球菌是造成皮肤和软组织感染的主要原因.
- 抗生素耐药菌株构成了重大的公共卫生挑战,需要替代治疗.
- 了解对S. aureus皮肤感染的免疫反应对于开发新疗法至关重要.
研究的目的:
- 为了研究瘤亡因子 (TNF) 在对黄金色斑马菌皮肤感染的保护性免疫力中的作用.
- 阐明S. aureus皮肤感染期间中性粒细胞中TNF受体 (TNFR) 信号传递的特定功能.
- 探索针对细菌性皮肤感染的TNFR信号的治疗潜力.
主要方法:
- 研究了TNF对S. aureus皮肤感染模型的影响.
- 研究了骨髓衍生免疫细胞和中性粒细胞内在TNFR信号传递的作用.
- 分析了TNFR1和TNFR2在中性粒细胞招募,细菌传播和抗菌活性中的功能.
- 在S. aureus和Pseudomonas aeruginosa皮肤感染模型中评估了一种TNFR2激动剂的治疗疗效.
主要成果:
- TNF促进对S. aureus皮肤感染的保护,由骨髓衍生的免疫细胞进行介导.
- 中性粒细胞内在TNFR信号传递对于免疫力对抗S. aureus皮肤感染至关重要.
- TNFR1促进中性粒细胞的招募,而TNFR2限制了细菌的传播,并增强了中性粒细胞的抗菌功能,包括中性粒细胞外陷的形成.
- 一种TNFR2激动剂在S. aureus和P. aeruginosa皮肤感染中显示出治疗效果.
结论:
- 在S. aureus皮肤感染期间,TNFR1和TNFR2在中性粒细胞中发挥着不同的,非冗余的作用.
- 准TNFR2为细菌性皮肤感染提供了一个有前途的治疗策略.
- 这些发现提供了对宿主防御机制的见解,以及对S. aureus和其他细菌皮肤病原体的潜在治疗方法.
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